Free ink writing instrument with microfluidic valve
US11117415B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Oct 6, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K23/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A writing instrument including a main body provided with a writing tip. The writing tip being supplied with ink by a free ink-type reservoir equipped with a pressure regulating device for regulating the pressure within the reservoir. The pressure regulating device includes at least one microfluidic valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.